Wokhala ndi mwayi wopanga okopera wa oxygen ndi wogulitsa ku China, khoma lonse la oxygen adapereka miyezo yapadziko lonse, ndipo mutha kukhala otsimikizika moyenera. Ngati simukupeza khoma lanu lolowera m'ndandanda wathu wopanga malonda, muthanso kulumikizana nafe, titha kupereka ntchito zokonda.